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Debt (Schedule Of Obligations Under Debt Arrangements) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013 | Nov. 18, 2010 | Mar. 31, 2014 7.875% Senior Unsecured Notes [Member] | Dec. 31, 2013 7.875% Senior Unsecured Notes [Member] | Mar. 31, 2014 Five Point Seventy Five Percentage Senior Unsecured Notes [Member] | Dec. 31, 2013 Five Point Seventy Five Percentage Senior Unsecured Notes [Member] | Feb. 08, 2013 Five Point Seventy Five Percentage Senior Unsecured Notes [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Senior secured credit facility | $ 640,500 | $ 582,800 |  |  |  |  |  |
Senior unsecured notes | 700,740 | 700,772 |  | 350,740 | 350,772 | 350,000 | 350,000 |
Senior unsecured notes, stated rate |  |  | 7.875% | 7.875% | 7.875% | 5.75% | 5.75% | 5.75%
Senior unsecured notes, unamortized premium |  |  |  | 740 | 772 |  |  |
Total long-term debt | $ 1,341,240 | $ 1,283,572 |  |  |  |  |  |

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- Definition Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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